docs: def destroy(self):
          """
          Destroy this prefix, running any cleanups and removing any files
          inside it.
          """
  
          subnets = (
              str(net.gw()) for net in self.virt_env.get_nets().itervalues()
          )
  
          self._subnet_store.release(subnets)
          self.cleanup()
          shutil.rmtree(self.paths.prefix_path())